For me, the social thriller is the thriller in which the fears, the horrors, and the thrills are coming from society. They're coming from the way humans interact.
Of course you have days that are long, you're tired, and things aren't working out, and you can get frustrated, but I would say any of the things that make it less glamorous or cause some complexity or turn you down the road you weren't expecting to go down is a part of the thrill.